Research Article
Effect of Nitrogen Sources on Microbial Biomass Nitrogen under Different Soil Types
Table 3
Total N uptake, bacterial N uptake, and (combined of two years) in rice cv. Giza 177 as affected by nitrogen sources.
| Treatments | Clay soil | Loamy soil | TN in shoot (%) | bacterial N uptake (mg pot−1) | (%) | TN in shoot (%) | bacterial N uptake (mg pot−1) | (%) |
| Nitrogen sources | | | | | | | Zero N | 1.30 | 23 | 14.7 | 0.87 | 3.3 | 5.5 | Urea | 1.86 | 61 | 18.4 | 1.09 | 13.8 | 12.5 | Straw | 2.66 | 112 | 20.1 | 1.22 | 27.5 | 17.2 | Sludge | 2.91 | 125 | 21.5 | 1.52 | 39.0 | 19.5 | test |
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| LSD 5% | 0.20 | 14.6 | 1.2 | 0.18 | 11.4 | 1.85 |
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*Significant at , ns: no significant, and : the proportion of plant N derived from microbial biomass.
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